燃料化学学报2023，Vol.51Issue(2)：186-196,11.DOI:10.1016/S1872-5813(22)60042-2
铈改性的铜/六方介孔二氧化硅催化剂在温和反应条件下高效地将草酸二甲酯氢化为乙二醇
Cerium-modified copper/hexagonal mesoporous silica catalyst for efficient dimethyl oxalate hydrogenation to ethylene glycol under moderate reaction conditions
摘要
Abstract
A highly efficient cerium-modified Cu/hexagonal mesoporous silica(xCe-Cu/HMS)catalyst for the vapor-phase hydrogenation of dimethyl oxalate(DMO)into ethylene glycol(EG)was prepared using an ammonia evaporation method.The Ce promoter can significantly improve the performance of the catalyst,and the best catalytic performance was obtained after the introduction of 1.2%Ce promoter on Cu/HMS.The DMO conversion and EG selectivity got to 99.6%and 96.3%,respectively,under moderate conditions(200 °C,2.0 MPa,H2/DMO = 100 and LHSVDMO = 1.2 h?1).Characterization results revealed that Ce modification can enhance the interaction between Cu and the support,improve the dispersion of Cu on HMS,and maintain the appropriate ratio of Cu+/(Cu++Cu0).In this study,a simple and low-cost method was used to synthesize Ce-modified Cu-HMS catalysts,which showed excellent catalytic performance in conversion of DMO to EG under moderate conditions.关键词
Cu/HMS/铈助剂/草酸二甲酯/加氢/乙二醇Key words
Cu/HMS/cerium promoter/dimethyl oxalate/hydrogenation/ethylene glycol分类
化学化工引用本文复制引用
吴迪,张娟,黄志军,陈建刚..铈改性的铜/六方介孔二氧化硅催化剂在温和反应条件下高效地将草酸二甲酯氢化为乙二醇[J].燃料化学学报,2023,51(2):186-196,11.基金项目
The project was supported by the National Natural Science Foundation of China(22072175). （22072175）
